Imagine a number of isoquants drawn for a particular Cobb-Douglas production function. If technology *decreased*, what would happen to those isoquants?
The Cobb-Douglas production function is represented as below -
F(X1, X2) = (X1)1/2 * (X2)1/2
So, this is a rectangular hyperbola function and hence isoquants are rectangular hyperbola and converging towards origin.
Therefore, Marginal rate of technical substitution can be calculated as below -
F(X1, X2) = (X1)1/2 * (X2)1/2
The Y isoquant of the Cobb-Douglas function is defined as -
Y2 = X1* X2
=> X2 = Y2 / X1
On differentiating, we will get -
dX2/dX1 = Y2/X12 = X2/X1.
Therefore, MRTS (X1, X2) = X2/X1
Thus, the MRTS is diminishing which leads to decreased and converged isoquants.
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